Manufacturing method of multi-axial composite base material

Abstract

The invention relates to a manufacturing method of a multi-axial composite base material. The manufacturing method is characterized by comprising steps as follows: a multi-axial glass fiber yarn layer is laid, after a weft yarn laying trolley moves weft yarn layers of the glass fiber yarn layer from one side edge of a conveying belt to the outside of the other side edge of the conveying belt in a fixed direction, weft yarn is hooked on retaining pins of the conveying belt, then the weft yarn laying trolley returns to the starting point in the direction opposite to the original direction, and multiple pieces of continuous Z-shaped weft yarn with the same arrangement are formed on the conveying belt through combination of the weft yarn laying trolley with the direction of the conveying belt during forward and reverse movement; then glass fiber continuous felt is laid, sewn and wound. The manufacturing method has the advantages as follows: glass fiber weft yarn and glass fiber warp yarn are laid on the conveying belt respectively through a weft yarn laying device group and a let-off device, so that the multi-axial glass fiber yarn layer is formed, a layer of the glass fiber continuous felt is laid on the multi-axial glass fiber yarn layer after the multi-axial glass fiber yarn layer passes below a continuous felt unwinding device, then sewing is performed by a multi-needle quilting machine, and finally, the multi-axial composite base material is obtained through winding.

Description

technical field [0001] The invention relates to a method for manufacturing a composite substrate, in particular to a method for manufacturing a multiaxial composite substrate. Background technique [0002] Glass fiber stitched fabric is a new type of glass fiber reinforced material. In this fabric, the warp and weft yarns are laid completely straight, only crossed, not interwoven, and there is no yarn buckling caused by the interweaving of warp and weft yarns in traditional woven fabrics, which can give full play to the glass fiber. The fiber has the characteristics of high tensile strength. At the same time, the fiber without buckling is more conducive to the flow of resin and is easier for resin to permeate. The composite material made of stitched fabric has high strength and good interlayer bonding performance. It is widely used in aerospace, shipbuilding, wind power industry, automobile industry, construction industry, transportation and other fields. [0003] Multi-axi...

AI Technical Summary

Problems solved by technology

Therefore, the multiaxial weft laying system mainly relies on imports, resulting in high initial investment in the production of multiaxial glass fiber products, and the structure and control system are very complex, inconvenient to maintain, and production capacity is restricted, which seriously affects the application of multiaxial composite products in various fields. Rapid development

[0010] (3) In addition, in the multi-axial glass fiber yarn lay-up structure, such as figure 1 As shown, since the angles of weft yarns in the same layer are the same (multi-axial refers to the different angles between different layers), in order to realize this process requirement, during the weft laying process of the multi-axial weft laying system, after the weft yarn reaches the edge of the conveyor belt 41, it is formed by multiple The rake needle 45 of the axial weft laying system hooks the weft yarn and folds it, and then the retaining needle 44 cooperates with the second folding direction, so that when the berth trolley moves back and forth, parallel weft yarn sections can be formed, so that the weft yarn in the layer The angles of the single weft yarns are the same, and the weft yarns located outside the retaining needle 44 in this part are waste yarns, resulting in a large waste of materials

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